Pneumatic countersinking-machine.



J. H. BONDY.

PNEUMATIC GOUNTERSINKING MACHINE.

APPLICATION FILED JUNE 27. 1912.

1,05 9 ,428, Patented Apr. 22, 1913.

2 SHEETS-BHEET 1.

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k James HBO/1d BY W \ATTORNEY.

COLUMBIA PLANOGMPH CD..WASMINGTON. D. C.

J. H. BONDY.

PNEUMATIC COUNTERSINKING MACHINE.

APPLIGATION FILED JUNE 27. 1912.

1,059,428. Patented Apr. 22, 1913.

2 SHEETS-:BHEBT 2.

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" 2. W James H'Bandy- I BY Tfm A TTORNEY.

COLUMBIA PLANOHRAPII 20.. WASHINGTON. D. c

animal): STATES? PATENT O JAMES ;H. BONDY, OF GREAT FALLS, 1MONTANA,.ASSIGNOR 0F ONE-HALF TO ARCHER} WHEELER, OF GREAT FALLS, .MONTANA-i PNEUMATIC .OOUNTERSINKING -MACHINE.

Specification of Letters Patent.

Patented Apr; 22,1913,

To all whom it may concern:

Be it known that LieJAMnsH; BONDY,EL citizen of the IUnited @States, residing ;at Great Falls, in the county of Cascade and State of aMontana, have invented icertain new and useful Improvements in iPneumatic Countersinking-Machines, of which the fol-I lowingis a full, clear, and exact description, reference a being i had to lthe accompanying drawings, formingla part hereofu My i invention has relationuto improve-; ments in pneumatic countersinking; ma

chines; and it consists in:theinovel {details of constructioni more fully set ifOIthil'l the specification and pointed out in. the claims.

In the drawings, Figure 1 is a top plan. of the. machine; FigxgQfis a side elevation thereofg Fig. 3 is a vertical cross-section on elevation, with; a crossesectionz on the line H of Fig. 2... i

The object of my invention is to provide a machine of 1 the character: referred. to

which maybe moved to and from the strucinexpedient to move these heavy and clumsy articles to the drillingvmachine, and where a the machine is moved to the articles operated on, it generally assumesvthe fo-rmflof some small but inconvenient hand-tool. In: plants where heavy structural members are moved to v the drilling machinepmuch time and. labor is necessarily, consumed, requiring considerable apparatus and a large num-; ber of helpers to accomplish the purpose.

The: obj ect here sought is. to improvise a: portable tool which will minimize the labor and time of idrilling and hence: reduce the cost1 of production. p

In detail, the invention may be described as follows Referring to the vdrawings, 1 represents a conventional form: of pneumatic drill un-. derstood in: theiart and not claimed herein, the same being mounted on a portable truck-t frame 2 provided with running :wheels 3.

The forward portion of the frameZ is pro-= vided with; the pairs of :fork members or lugs 4, 4,, which receive between themthe boss 5, and the air delivery pipe 6,this armounted a counter-weight W, sa'idweight rangement securingthe drill iniplaceland 155 preventing 1 the same from turning when in use. a.

H, represents a hose coupled to. the pipe 6 and leading to any suitable source of compressed-air supply (notlshown).

A pinx7is'passed through the-members 4,4,iabove the parts 5 and 6, to prevent up-1 ward displacement of the drill. To one. end 5 of :the frame 2, preferably the front,:is attached ahandle 8 :preferablyof piping for properly handling the truck and moving the same about from place to place. Thehandle,fforming,as it does a rigid extension of thetruck-frame maybe, used as a: lever against which the operator may bear his weight and thereby firmly hold the bit: a of;

the drill against the stock material: operated on. Forming a rear extension. of the truck-1 frame is a bar 9 on which is adjustably .7 5 not ionly impartingincreased weight to the 1 machine 1 which resists the thrustof the drill; but serving to balance the truck so a that a thelatter may "more conveniently be handled; a

The parts aforesaid (with theexceptiolnn of thewheels 3,13), are carried by the vertically adjustable transverse truss-shaped member or slide 10, theiends ofthe latter be ing;mountedslidingly on the sides: of the invertedU-shaped member 11 forming the inner section 10f the guide-frame F which spans: the truck-frame and directly supports the running wheels 3. The slide 10 is adjusted: by the hand-wheel 112 .mountedbetween the upper transversehorizontal p015 tions of the inner and outer sections of the guide-fram said wheel operatingvas a nut on a iscrew-stem 13 rigidlysecurcd at its lower end to the-frame 2 and slide 10, the upper :end of the screw-stein passingafreely through the top of the guide-frame F Rotation of the hand-wheel in proper direction raises or lowers the screw and hence elevates or lowers the truck-frame 2 tobringthe bit a of the drill thereof to any desiredelevation according to the height of the stock or structural member or platebeing. operated on; The frame 2 being; thus once brought to. any desired elevation; will; remain inits position untilshiftedi therefrom. by the manipulation of the hand-wheel 12.. The slide 10 is mounted above the axis of oscillation iof the frame thus bringing the center of gravity of the parts carried by the truck inclose proximity to the, axis of the running'wheels, or the axisv of oscillationof the frame F.

Attached to convenientportion of the frame 2 adjacent the dr ill is a box 14 for holding soap-Water, oil or other liquid which by suitable piping at is conducted to the body of the bit a to keep the latter cool While in service.

The machine though specifically designed I In effect, both the framesFJ'and 2 constitute a truck-frame because they jointly may be considered as forming a truck mounted onthe wheels, 3, 3. I For convenience 'however,-the horizontal frame 2is here desig-[ nated as the truck-frame, the frame F. being the guide-frame. They both however, tilt ina vertical plane about the; rotation axis of thewheels 3,3. The feed of the drill is accomplished: not only by the weight "of the machine, but by the weight of the operator on thehandle 8 if necessary; Theinvention is obviously not limited to pneumatic ma-v chines. j- Having described my invention, what I claim is,: g V a 1.. In combination with a balanced, ver tically-tilting frame, a vertically sliding member mounted thereon above the axis of-oseillation of the frame, and a drill co- 1 operatively connected to said sliding memher andadapted to be elevated to any position depending on the height ofthe stock operated on.

2; In combination with a balanced,-ver

' tically-tiltingguide-frame, a vertically slid ing truck-fra-me mounted thereon above the axis of oscillation of the guide-frame, and a tool on the, truck-frame removed'a suitable distance from the guide-frame.

3.- In combination with a balanced, verticallyrtiltin'g-guideIPframe, a vertically sliding;truck-frame mounted thereon above the axis of'oscillation of the guide-frame and extending in opposite directions therefrom, .a toolflon the truck-frame on one side of the guide-frame, and a counter-weight on the Copies 01- this patent may be obtained for truck-frame. on"v the opposite' side of: the guide-frame.

4.1m combination witha portable Vere, tically-tilting and balanced guide-frame, a.

truck-frame mounted slidingly thereon above the axis ofoscillation ofthe guide-frame,'a, j

tool on the truckrframe removed from the guide-frame, and a counterweight for balaneing the tool.

7 5. In comb'nation1with a vertically-tilting, balanced guide-frame, a vertically slidingmember mounted on" said guide-frame above the axis oflosoillation of the frame,

a truck-frame coupled to the sliding member and a toolcarried by the truck-frame.

- 6. In combination with a portableframe, a slide movable vertically along' and "guided; by said frame, a screw-stem leading from said slide and passing loosely through-the.

and oscillatable vertically about a fixed axis,

top of thelframe, a hand-wheel for: actuat-* ing the screw-stem and thereby adjusting. the slide, a truck-frame, secured to the slide,

azdrill on said truck frame, and means 011.1,.

the truck frame for holding the against the stock operated on.

drill-tool 7. In combination wlth a palr ofrunning, wheels, a vertical guide fram e leading from the common axis of rotation, of the vvheels,l

and spanning the wheels, a slide movable; and adjustable 'verticallyon-said' frame, a''( vertically tilting truck-frame secured to i said I slide and mounted between tl esides of the I guide-frame, a drill mountedon the-truck:

frame onone-side of the'rotation f axis of the wheels, a handle-bar extension for the truck 2 frame rigidly connectedto the :latter onthe I side supporting the drill, and ameans i on the truck-frame on the oppositeside. of the rota- J tion. axis of the wheels for balancingthe truck-frame, the parts 1operating-substan-' Y tially as, and for the purpose set forth.

8. i In combination with a portable uide: I

frame adapted to oscillatevertically about a fixed axis, a slide onv said'guide-frame,means on the guide-frame for iadjustingtheiposia tion of the slide, a member leading fromthe:

slide a suitable distance, from the guideframe andfreeto oscillate with the guide frame, and a tool supported from said:

member.

In testimony WhereofI my signature,

in presence of twowitnessesq \Vitnesses: r

TIMOTHY P. CORCORAN, WILLIAM H. BEARD.

five cents each, by addressing e Commissioner, of 'Yatents, Washington, D. C. 1 I

JAMEs H; :BoNnYj 

